Andeew campbell



(No Model.)

A. CAMPBELL. PAGE CLOTH FOR PRINTING PRBS'SBS. No. 279,129. I PatentedJune 12,1883.

WITNESSES: INVENTOR:

v UNITED STATES PATENT OFFICE.

ANDREW CAMPBELL, OF BROOKLYN, ASSIGNOR TO JOHN MCLOUGHLIN AND EDMUNDMOLOUGHLIN, OF NE\V YORK, N. Y.

FACE-CLOTH FOR PRlNTlNG-PRESSES..

SPECIFICATION forming part of Letters Patent No. 279,129, dated June 12,1883.

Application filed July 3, 1882.

T all 1071,0121, it may concern:

Be it known that I, AN DREW CAMPBELL, a :itizen of the United States,and a resident of Brooklyn, Kings county, New York, have inventedcertain Improvements in Face'Cloths for Printing-Presses, of which thefollowing is a specification. 1

This invention relates to what is technically called a face-cloth. "fora printing-press, be-

; ing the sheet which covers the printingsinrtace or blanket, and uponwhich the paper lies in receiving the impression. My improved face-clothis adapted to all forms of printingpresses, but is particularly intendedfor lithographic cylinder-presses, .for reasons that will be givenhereinafter. The materials ordinarily employed forthis purpose are tooelastic and yielding, and on lithographic cylinderpresses particularlyare apt to stretch and gather in folds or wrinkles ahead of theimpression. To perform its functions best, a face cloth should benon-elastic and non-yielding in the direction of its length and breadthunder ordinary strains, and yet be flexible and durable.

Toproduce a face-cloth fabric of this character is the object of mypresent invention, which I will now describe.

Between two sheets of muslin or other fibrous o fabric of a similarcharacter suitable for the purpose I insert a sheet of finely-woven wirecloth or gauze, unite the whole with rubber cement, and then calenderand vulcanize the fabric. Such a fabric is non-elastic, owing to theseries of metallic wires extending both lengthwise and crosswise, and isnevertheless pliable and flexible. It also presents asmooth anduniformly-firm surface for the paper to rest 011 when receiving theimpression.

In the drawings which serve to illustrate my invention, Figurelrepresents a fragment of my improved face-cloth fabric, partlydissected. Fig. 2 is a fragmentary sectional view, illustrating thestretching 'of the faceclothover the blanket on the printing-surface ofthe cylinder; and Fig. 3 is a diagram designed to illustrate the defectin the ordinary face-cloth which I seek to obviate.

. A represents the face-c1oth as a whole. In

Fig. 1, a a are the exterior fabrics, shown as (No model.)

partly stripped off from the wire-cloth b at one end. V

In Fig. 2, 3 is the printing-surface of the cylinder of a press; 0, therubber blanket resting thereon and clamped fast with the facecloth A at0. At the other end a rod, (1, in the end of the face-cloth is connectedby straining-bolts c with a straining-bar, f, on the cylinder. Thisenables the operative to strain the cloth. uniformly.

In Fig. 3 the cockles or wrinkles formed by the stretching of theordinary face-cloth are shown at w. These press the paper down lightlyupon the form in front of the print ing or impression point, and producethe cf 6 feet known as mackle. \Vhen the impression passes off, thesheet contracts to its normal position.

It is not absolutely necessary that the exterior fabrics should betextile; but I. pre 0 fer textile to paper or felted fabrics by rea sonof its strength. Nor is it absolutely necessary that the fabrics shouldbe cemented to the gauze with rubber and vulcanizethas other flexiblecements might be employed to produce 7 5 more or less satisfactoryresults. I prefer, however, the construction described.

I do not wish to confine myself to one cloth or sheet only on each sideof the gauze or wire cloth, as two or more may be employed. Icontemplate also constructing my face-cloth in one with the working-faceof the ordinary rubber blanket-that is to say, attached to and forming apart of said blanket, and not separable therefrom.

Having thus described my invention, I claim--- 1. A face-cloth forprinting-presses, composed of a sheet of wire-cloth interposed betweenexteriorsheets of muslin or other simio lar material, and the wholecemented together with a flexiblecement, substantially as set forth.

2. A fabric-for face-cloths for printingpresses, comprising two exteriorfabrics, as 5 muslin or other similar material, and an interposed fabricof woven wire, the three cemented together with rubber and vulcanized,as set forth.

3. Thecombination, withthe cylinder of a too wanes printing-press, of aface-cloth composed of a my name in lhe presence of two subscribingsheet of wire-eloth interposed between exte witnesses.

rior sheets of muslin or other similar mat-erial and the said wire-c1othand exterior fab- 5 rics cemented together with a flexible cement,substantially as set forth.

In witness whereof I have hereunto signed ANDREV CAMPBELL.

YVitnesses HENRY CoNNET'r, ARTHUR C. FRASER,

